公开(公告)号：US12195403B2

公开(公告)日：2025-01-14

申请号：US17302958

申请日：2021-05-17

Applicant: Rolls-Royce Corporation

Inventor： Jeffrey Crutchfield ,  Christopher Downie

IPC: C04B41/45 ,  B28B1/52 ,  B28B7/00 ,  B28B7/06 ,  B28B7/32 ,  B28B7/38 ,  C04B35/80 ,  B28B3/00 ,  B28B7/34

Abstract: A method of forming a bladder cast ceramic matrix composite (CMC) article including infiltrating a CMC substrate positioned in a cavity of a mold body with a slurry. The CMC substrate includes reinforcement material defining inner spaces. The slurry includes solid particles and a carrier material. During infiltration, the slurry at least partially fills at least a portion of the inner spaces of the CMC substrate. The method also includes inflating at least one bladder that is coupled to the mold body and disposed within the cavity such that a surface of the at least one bladder in an inflated configuration contacts at least one surface of the CMC substrate. The method also includes drying the slurry to remove at least a portion of the carrier material form an infiltrated CMC and deflating the at least one bladder.

公开(公告)号：US12188365B1

公开(公告)日：2025-01-07

申请号：US18528739

申请日：2023-12-04

Applicant: Rolls-Royce Corporation ,  Rolls-Royce High Temperature Composites Inc.

Inventor： David J. Thomas ,  Christopher Downie ,  Aaron D. Sippel ,  Ted J. Freeman ,  Clark Snyder

IPC: F01D11/12 ,  F01D25/00 ,  F01D25/24 ,  F01D5/28

Abstract: A turbine shroud assembly adapted for use with a gas turbine engine includes a shroud segment. The shroud segment includes a heat shield, an attachment flange, and a multi-layer coating. The heat shield extends circumferentially partway around the axis to define a portion of gas path for the gas turbine engine. The attachment feature extends radially outward from the heat shield. The multi-layer coating is applied to different surfaces of the heat shield and the attachment feature of the shroud segment.

公开(公告)号：US20220363605A1

公开(公告)日：2022-11-17

申请号：US17302958

申请日：2021-05-17

Applicant: Rolls-Royce Corporation

Inventor： Jeffrey Crutchfield ,  Christopher Downie

IPC: C04B41/45 ,  C04B35/80 ,  B28B7/32 ,  B28B1/52

Abstract: A method of forming a bladder cast ceramic matrix composite (CMC) article including infiltrating a CMC substrate positioned in a cavity of a mold body with a slurry. The CMC substrate includes reinforcement material defining inner spaces. The slurry includes solid particles and a carrier material. During infiltration, the slurry at least partially fills at least a portion of the inner spaces of the CMC substrate. The method also includes inflating at least one bladder that is coupled to the mold body and disposed within the cavity such that a surface of the at least one bladder in an inflated configuration contacts at least one surface of the CMC substrate. The method also includes drying the slurry to remove at least a portion of the carrier material form an infiltrated CMC and deflating the at least one bladder.